iOS 13.4 (build 17E5233g) is an official Apple over-the-air update for the iPhone X (GSM), released on 2020-02-19T18:24:49Z. The update package is 843.56 MB. This is a delta (partial) update that requires 13.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 36367a56e27cee2003f9ce6b9549342eb8e9c2db.zip.